Revolution counter



LKRUG. REVOLUTION COUNTER. APPLICATION FILED IAN. 29, I920.

Patented Aug. 121922.

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Lei-2599825..

Application filed January 221, 1920.

of the borough of Manhattan, city of New 'York5 and county and State of New York,

have invented a new and useful Revelli` tion Counter, of which the following is a full, clear9 and exact description.

'llhis invention relates to revolution countersv and has for its primary object to provide a mechanism Jfor automatically regis-v tering the number of revolutions of a Wheel or other part of a machine7 which will he positive in its operation and absolutely accurate.

lt is a. more particular object of my invention to provide a device oi the above character having a series of-revoluble digit Wheels and Carrying- Wheels to transmit movement from one digit Wheel to another, said carrying Wheels normally coacting with the adjacent digit Wheels in such manner as 'tov provide a positive locking means. vand prevent the casual rotation oione Wheel relative to the other.

My invention also contemplates a very simple and compact arrangement of the sev eral cooperatingl elements so that the mechanism can he mounted in a case or housing of, relatively small size and will present a neat appearance when mounted upon a nur ln thev dranings` wherein i hn disclosed one satisfactory embodiment oi the invention. and in which similar reference characte s designate corresponding parte throughout the several views: i

e'ure 'i elevation oi" im over revolution counter.

Specification of Letters Patent.

.Patented faire i5? NW2.

Serial No. 354,798.

through the drum7 the digit Wheels and certain of the carrying wheels being removed.

Figure 6 is s detailperspective view of one of the digit Wheels, and,

Figure 7 is a section taken on the iine 7-7 of Figure 2. s

Figure 8 is a detail elevation of one oiE the parts-7- Reierring in detail designates a. case or u. formed upon one side with the oppositely extendingr attaching' Hannes o. The housing' 5 is closed at one end h v the Walt 7,. While the opposite end of said housing is adapted to he closed hy a removable plate 8.

A drum 9 is integraliy Jformed one of its ends with the removable plate 8. and at its other end is adapted to engageI over n shoulder l0. formed upon the Wall l? when the drum is inserted Within 'said housing. The Wall of the drum 9 is provided with e plurality of spaced circumferentially eX- tending slots ll., the purpose of which voili be presently explained.

Un the drum 9 a plurality of digit Wheels l2 are loosely mounted for reiative4 rotation. Each of these Wheelsis formed with an annular Flange 13. projecting lateraliy from one side thereof, said Harige being formed internally with the .spaced teeth. le. T he digit Wheel l2 at the right. or the unit Wheel is provided with a iangre 1B o greater width than the iianges on Vthe remaining; wheels. so as to aiiord a smooth or untoothed annular portion projecting' heyond the teeth M. illfithin this projecting portion of the dance on the unit Wheel a ring or annnius 15 is loosely tted. This annnlus is provided With internal gear teeth i@ in sini iiar manner the several digit vvheeis. though in' greater nurnhe'r. ldre'lierahiy the annulns l5 is provided twenty 't From the opposite side face of this annuius and at diainetricaliy oppi to the drawings, 5 honsine which is lugs fr? project. and e concer i8 also formed upon the nains, said e uider heine; spaced from lie ooposiie e et so fr the spaces or recesse m J2 .L i lrgi; finch' Oi c the eiwit As Will be clearly seen from reference to Figure 2 of the drawings, the digit Wheels, when assembled upon the drum 117 have their opposed side faces in close contact with each other, the lug 20 and shoulder 21 of one Wheel extending vvithin the flange 13 on the adjacent Wheel and in spaced relation to the teeth la on said flange.

A shaft 23 is journaled in the Wall 7, and the plate 8 of the case or housing, and extends through the drum 11. This shaft is arranged in spaced parallel relation to the axis of the drum and adjacent to the Wall thereof. Upon the shaft 23 a series of carrying wheels 2d are loosely mounted for free rotation relative to each other. Each of these vWheels is formed with a hub extension or sleeve 24, whereby the Wheels are held in proper spaced relation and against relative longitudinal movement on the shaft. Each carrying Wheel 23 is preferably formed with four radially projecting teeth '25, and, as seen in Figures 3 and 5 of the drawing, these teeth project through the respective slots or openings 11 in the drum, and eX- tend between the opposed faces of the adjacent digit Wheels 12, one tooth of each carrying vvheel being disposed between the adjacent teeth 14- of one digit Wheel. The teeth 25 of each carrying Wheel are provided in one side face thereof with grooves or channels 26, through which the shoulders 21 on the digit wheels may freely move. ln each case, the teeth 25 of the carrying Wheel located at opposite sides of'tliat tooth which is engaged With the teeth 14 of one digit wheel project through the ends of the slot 11 in the drum, and are disposed closely adjacent to the inner face of the shoulder 21 on the nextI digit Wheel at the right. Thus it Will be apparent that when this latter wheel is rotated, the Wheel at the leftthereof will be locked against casual movement by the oppositely projecting teeth 25 of the carrying wheel. ln this manner, the Whole series of digit Wheels are securely held against a shifting rotative movement onthe drum, so that the digits on the peripheral faces of these Wheels will be maintained in proper alignment with each other to facilitate the easy reading thereof.

Upon the right hand end of the shaft 9.3 between the vvall 7 of the housing and the first of the carrying Wheels a pinion 27 is keyed or otherwise fixed for rotation With said shaft. This pinion, which is provided with ten teeth, is in constant meshing engagement with the teeth 1G of the annulus 15, and thus imparts a continuous rotation to said annulus. Q8 of the shaft a gear or other suitable drive means is secured, whereby the mechanism may he operatively connected to the driven part of a machine. lt is, of course, understood that the shoulder 18 on this annulus uUpon the projecting end` i/ieasee moves through the slots 26 in the 'teeth of the first carrying wheel, as these teeth are successively brought into operative engagement vvith the 'first of the digit ivheelsi `ln the operation of my invention as above described, it will be understood that in each revolution of the shaft 23 a half revolution is imparted to the annulus 15, and one of. the lugs 17 thereon., which are ivider than the shoulder 18, is thus caused to engage against the side of the tooth 25 of the first carrying wheel. which is operatively engaged between the teeth 14 of the first digit Wheel. Thus astep rotation is imparted to this digit. wheel to expose the next higher numeral on its peripheral face in the sight opening 29 of the case or housing 5. This operation is repeated in each revolution of the shaft 23 until the zero on the irst digit Wheel is exposed through the sight opening. ln this latter step rotation of the digit Wheel the lug 2O thereon engages against the side of the tooth on the second of the carrying wheels 24, and thus imparts a step rotation to the second digit wheel to expose the numeral 1 thereof in the sight opening. In this operation, the next adjacent tooth Q4 of the carrying Wheel moves up through the slot 11 in the drum and also through the 'space or recess 22 between the lug 20 and the shoulder 21 on the digit wheel until the groove Q6 in said tooth is in line with the shoulder. These operations are continued and in every revolution of one of the digit Wheels a step rotation is automatically imparted to the next adjacent digit Wheel at the left.

As above explained the disposition of the teeth on the carrying Wheels with relation to the digit Wheels serves to securely loclr the several digit wheels against a casual rotative movement on the drum which might be occasioned either by vibration or by fric tional adherence between the contacting faces of the adjacent digit Wheels. V

From the foregoing description considered in connection with the accompanying drawing, the. construction, manner of operation and several advantages of my improved revolution counter will be readily under stood. The several parts of the device are of simple form, and owing to the compact arrangement of the digit Wheels and the carrying Wheels, the operation of the mechanism is rendered positive and reliable under all conditions.

Another important and practical feature of my invention resides in the mounting and arrangement of the Wheel carrying drum 9. By mounting this drum on the removable end plate 8 of the caseor housing., the entire mechanism may he easily and quickly removed and the individual digit Wheels and carrying Wheels readily assembled or disassembled. for the purpose of inspection losy llO

closed to give excellent results in practical use. In View of the simplicity of such arrangement, it is also apparent that the countencan be produced at comparatively `small manufacturing cost.

While I have herein shown and described the preferred construction and relative arf rangement of the various elements, it will be manifest that the ldevice might also be exemplified in numerous other alternative constructions. Accordingly the privilege is reserved of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope `of the appended claims.

What I claim is:

1. A rotation counter orv the like comprising digit wheels, carrying wheels having engagement to rotate the digit wheels, relatively-rotatable means between each digit and carrying wheel for avoiding casual rotation of the wheels, and means on each digit wheel for actuating the associated carrying wheel intermittently.

2. A rotation counter or the like .com-4 prising digit wheels, grooved -carrying wheels, means on the digit wheels occupy ing the grooves of the car ing wheels to avoid casual rotation of the wheels, and means on the digit wheels to intermittently actuate the associated carrying wheels.

3. A transfer couple comprising digit and transfer means provided between them with a cooperating groove and shoulder engaging the groove to avoid casual rotation.

. 4. A rotation counter comprising carrying or transfer wheels, digit wheels engaging the carrying wheels at opposite sides and being 4in respectively driving and driven relation thereto, the driving carrying wheel having means to rotate the digit wheel step by lstep, said carrying wheel having parts overhanging said means, said driving digit wheel having means engaged by the overhanging parts toavoid casual rotation of the wheels.

5. .In a revolution` counter, a series of digit wheels independently revoluble about a common axis, carrying wheels having a common axis of, rotation, each carrying wheel having teeth adapted to successively coact `with one digit wheel to impart a step rotation thereto, each of said teeth having a groove in one side, means on an adjacent digit wheel to, operatively engage the coacting tooth of the carrying wheel and move i the first-named digit wheel one step, said second-named digit wheel having anannular shoulder to` engage in the grooves of said teeth as they are successively brought in operative relationto the first-named Vdigit wheel and thereby lock the carrying wheel While permitting of the free rotation of saidvsecond-named digit wheel.

6. In a revolution counter a series of digit wheels independently revoluble about a common axis, carrying wheels having a common axis of rotation, each carrying Wheel having teeth adapted tosuccessively coact with one digit wheel to impart a step rotation thereto, each f said teeth having a groove in one side, means on an adjacent digit Wheel to operatively engage thev coacting tooth ofthe carrying wheeland move the first-named digit wheel one step, said second-named digit wheel having an annular shoulder to engage in the grooves of said teeth .as 'Lhey are successivelybrought in operative relation to the 'first-named digit wheel and thereby lock the carrying Wheel while permitting of the free rotation of said second-named digit wheel, the shoulder on the'latter digit wheel having a recess therein through which the teeth of the carrying wheel may move into coactng relation with the first-named digit wheel.

7. In a revolution counter, a series of digit wheels independently'revoluble about a common axis, a series of carrying wheels having a common axis` of rotation,- each carrying wheel having teeth adapted 'to successively coact with one digit wheel to impart a step rotation thereto, each of said teeth having a groove 'in one side, a lug 'projecting laterall from an adjacent digit wheel and adapte to engage said coacting tooth of-the carrying wheel and thereby move the first-named digit wheel one step, said second-named digit wheel also having a laterally projecting shoulder of less width than the lug adapted for engagement in the grooves of said teeth on the'carrying wheel as` theyare successively brought into coacting relation with the first-named digit wheel, whereby the carrying wheel is locked against casual rotation while permitting of the free rotation of said second-named digit wheel. l

In testimony that I claim the foregoing as my invention, I have signed my name.

LUDWIG KRUG. 

